end-Permian mass extinction
A review of the Late Permian – Early Triassic conodont record and its significance for the end-Permian mass extinction
... 662 Shen, S.Z., James, L., Crowley, J.L., Wang, Y., Bowring, S.A., Erwin, D.H., Sadler, P.M., Cao, C.Q., 663 Rothman, D.H., Henderson, C.M., Ramezani, J., Zhang, H., Shen, Y.A., Wang, X.D., Wang, W., Mu, 664 L., Li, ...
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Dynamic anoxic ferruginous conditions during the end-Permian mass extinction and recovery
... The precise chemical state of the water column also has major implications for the biogeochemical cycling of nutrients such as P and N. Current carbon cycle models for this time period require the inclusion of a ...
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Rapid biotic rebound during the late Griesbachian indicates heterogeneous recovery patterns after the Permian-Triassic mass extinction
... 511 Chen, Z.Q., Tong, J., Kaiho, K., and Kawahata, H., 2007, Onset of biotic and 512 environmental recovery from the end-Permian mass extinction within 1–2 million 513 years: a case stud[r] ...
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Contrasting Deep-water Records from the Upper Permian and Lower Triassic of South Tibet and British Columbia: Evidence for a Diachronous Mass Extinction
... Late Permian–Early Triassic marine records are seen in sections from the western deep-water mar- gin of Pangea (Ursula Creek, British Columbia) and the high paleolatitude, southern margin of the Neotethyan Ocean ...
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SHRIMP zircon U–Pb ages from coal beds across the Permian–Triassic boundary, eastern Yunnan, southwestern China
... largest mass extinction occurred at the Permian e Triassic ...main mass extinction pulse happened just before the de fi ned Permian e Triassic boundary (PTB) (Shen et ...the ...
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Latest Permian carbonate carbon isotope variability traces heterogeneous organic carbon accumulation and authigenic carbonate formation
... An elevated oceanic carbonate inventory is a predicted aspect of an ocean without pelagic calcifiers, which only started proliferating during the Mesozoic and would effec- tively buffer short-term perturbations to P–Tr ...
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Trajectories of Late Permian Jurassic radiolarian extinction rates: no evidence for an end-Triassic mass extinction
... major extinction of radiolarians can be recognized across the Triassic-Jurassic boundary ...the end-Permian mass extinction ...of extinction rates seen in the raw data ...Norian ...
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Permian Aquatic Reptiles
... the end-Permian mass extinction, but did not last long into the ...Other Permian aquatic reptile genera (Mesosaurus, Hovasaurus, Barasaurus) used snake-like side-to-side tail ...
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Impact of the Late Triassic mass extinction on functional diversity and composition of marine ecosystems
... late Permian (Twitchett 2006; Foster & Twitchett 2014; Foster et ...and end-Cretaceous (Aberhan & Kies- sling 2015) extinction events, when suspension feeders suffered a crash primarily ...
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Salinity changes and anoxia resulting from enhanced run-off during the late Permian global warming and mass extinction event
... the extinction interval, with higher values before the extinction event and lower values after the event ...the extinction event. Within the 2 m interval including the extinction interval (−1 ...
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SCI20UnitCCh2_SuggestedAnswers.pdf
... The Permian Extinction at the end of the Paleozoic Era could have been caused by a period of glaciation, by the reduction in coastline with the formation of Pangaea, by a deep impact from a comet or ...
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The fate of the homoctenids (Tentaculitoidea) during the Frasnian-Famennian mass extinction (Late Devonian)
... association with the mass extinction... several centimetres below the boundary” (p. 167). Thus the F-F boundary may have been placed too high in this section: if it were taken as the first occurrence of P. ...
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Time scales in the development of Tasmanian physiography
... At Latrobe and Preolenna the Permian areas are included in Western type country, with neighbouring areas of Lower Palaeozoic rocks rising' higher than the Permian areas, and the removal [r] ...
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Palaeomagnetism and magnetostratigraphy of the Permian and Triassic of Spitsbergen : a review of progress and challenges
... the Permian and Triassic rocks of Svalbard do not provide ideal and “classic” lithologies, such as volcanic and igneous rocks, pelagic limestones and red beds, for palaeomagnetic ...the Permian and Triassic ...
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Could a potential Anthropocene mass extinction define a new geological period?
... 130 Observations of increasing CO2 130ppm rise since ~1880; IPCC, 2013, temperature 1°C higher than 131 the pre-industrial level; IPCC, 2013, and changes to ecosystem structure urbanisat[r] ...
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The Composite Species Concept: A Rigorous Basis for Cladistic Practice
... an end with the extinction of the latest internodon that satisfies the following criteria: (a) it is a descendant of the originator internodon of the species, (b) it does not possess quality Q, and (c) ...
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The cultural politics of mourning in the era of mass extinction: Thylacine specimen P762
... of species-thinking. Resurrection and conservation share a similar logic which facilitates human domination of nonhuman animals. After all, it is through intensive breeding programs that humans can work to counteract, ...
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Anomalous Extinction Efficiency of Two Dimensional Particles in the Visible
... the extinction per unit volume increases with the decrease of ...get: extinction cross section/volume ≤ 1700 ( µ m) − 1 ...their extinction upper ...
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Authigenic carbonate precipitation at the end-Guadalupian (Middle Permian) in China: Implications for the carbon cycle in ancient anoxic oceans
... The end-Guadalupian extinction horizon is assigned to the top of the Mudstone Unit, while the biostratigraphically de- fined G–LB is placed at the base of the lower Wujiaping bioclastic limestones based on ...
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Involvement of the lateral orbitofrontal cortex in context-induced and cocaine-primed reinstatement of cocaine seeking behavior in rats
... Surgery. At least 48-h after food training, rats was pre-anesthetized using ketamine hydrochloride and xylazine (66 and 1.33 mg/kg, i.p., respectively). Full anesthesia was maintained during surgery with pentobarbital ...
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